auto-tagging

A query parameter that is automatically added to the URLlocation of a resource on the Internet. of your landing pages that is then used by Google Analytics to pull data about the clickWhen a user clicks on an ad they are taken to the ad’s landing page (or final URL) for the ad. This is when the advertiser is charged for a campaign using a CPC bid. (and other attributes) into your reports. See also GCLID.